EP1107841B1 - Giesswalzanlage, insbesondere dünnbrammengiesswalzanlage - Google Patents
Giesswalzanlage, insbesondere dünnbrammengiesswalzanlage Download PDFInfo
- Publication number
- EP1107841B1 EP1107841B1 EP99963118A EP99963118A EP1107841B1 EP 1107841 B1 EP1107841 B1 EP 1107841B1 EP 99963118 A EP99963118 A EP 99963118A EP 99963118 A EP99963118 A EP 99963118A EP 1107841 B1 EP1107841 B1 EP 1107841B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slabs
- continuous casting
- sequences
- casting
- thin slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
Definitions
- the invention relates to a method for operating a Casting and rolling mill, in particular a thin slab casting and rolling mill, with a computing device, being on the casting mill inside sequences of a plurality of slabs are produced, the different production orders belong.
- the invention also relates to a casting and rolling plant, in particular thin slab caster, with a computing device, where on the casting and rolling machine within sequences A large number of slabs can be produced, which are different Production orders.
- casting and rolling plants are technical Restrictions are subject to, for example the service life of parts of the system.
- the division of the operation of the casting and rolling mill into individual Sequences are a consequence of such technical restrictions.
- the object of the invention is a method for operating a casting and rolling plant, in particular a thin slab casting and rolling plant, create that enables an optimized operation.
- This task is carried out in a method of the aforementioned Art solved according to the invention in that the sequence of the Production orders related slabs within the sequences with the computing device through a genetic algorithm is determined, and that the casting and rolling plant accordingly the determined sequence is controlled by the computing device.
- the Object achieved according to the invention in that the computing device a genetic algorithm to determine the sequence of the slabs belonging to the production orders within the Contains sequences.
- the method according to the invention is particularly good at Thin slab casting machines can be used. Because of there existing, more extensive technical restrictions the genetic algorithm is particularly well suited to to ensure optimized operation of the system.
- FIG. 1 shows a thin slab caster 1 shown for the production of sheet metal, for example is provided.
- CFT Tunnel Furnace
- HSM Hot Strip Mill
- crude steel is an alloy pan (Ladle Furnace) 7 fed, which serves the steel in Alloy depending on desired melt sizes.
- VD Vacuum Degassing
- CC Continous Caster
- the Thin slab caster 1 of Figure 1 no storage of created slabs. Instead, the slabs immediately become the Hot rolling mill 6 fed. As shown in Figure 1 with the 15, the slabs successively fed to the hot rolling mill 6 for processing, no longer two slabs at the same time or in parallel, like this is the case in the tunnel furnace 5.
- the slabs are passed through several times Roll pairs passed through and thereby in their thickness reduced.
- the hot strip is formed, which is approximately thick has between 1 mm and 12 mm.
- the hot rolling mill 6 follows often a cold rolling mill, with which the slabs of another Thickness reduction to be subjected.
- the end product is at the exit of the cold rolling mill, the cold strip that it is for example, a sheet with a thickness of 0.8 mm to 1 mm.
- the described parts of the Thin slab caster 1 each have certain Life.
- the distributors of the Casting plants 9, 13 after a certain amount of liquid steel cleaned, warmed and if necessary, also be partially renewed. The same applies to the molds and the segments.
- At the hot rolling mill 6 and the cold rolling mill must follow a certain rolled length of slabs carried out the rollers renewed become. These operations are called armor or armor or set Called up.
- the armor of the casting plants 9, 13 can be different Events occur independently of each other. Arming the Hot rolling mill happens without interrupting the casting processes. The armor on the casting and rolling systems 9, 13 interrupts this continuous casting of slabs. The interval between two set ups is called a sequence.
- FIG. 2 it is is a diagram over time t that represents the temporal Sequence of events in the tunnel furnace 5 indicates.
- the tunnel kiln 5 is made up of two strands Pass 16, 17 with successive slabs. Everyone this strand consists of successive sequences 18 and armor 19. Each of the sequences 18 is exposed individual melts 20 together, the individual melts 20 specific slabs 21 are assigned.
- the sequences 18 and armors 19 result as described from the service life of the parts of the thin slab caster 1.
- melts 20 which are also referred to as heats
- the slabs 21, which are also referred to as slab each have e.g. the steel brand of that melt 20, from which they were made. From one of the melts 20, as shown in FIG. 2, several slabs 21 are produced.
- Figure 2 shows an example of how the Strand 17 is the first sequence 18 from a total of four melts 20 which in turn produces a total of 87 Slabs 21 are provided.
- melts 20 are processed, their steel brands with each other are tolerated.
- the melts 20 must be a so-called Belong to steel brand family. Only after armor 19 can use melts 20 with other steel brands come. This places a technical restriction on the Thin slab caster 1.
- sequences 18 depend on FIG Service life of the parts of the thin slab caster 1. This places another technical restriction on the Thin slab caster 1.
- the width and the thickness the slabs are affected by the molds and the segments become. However, this is not possible at will. For example, the width of the slabs only of a larger width in Direction to a smaller width within and same sequence can be changed. That way further technical restrictions for the Thin slab caster 1 available during operation the same must be taken into account.
- order-related restrictions for example the steel brand and the quality of the steel, which is desired and used in a production order shall be.
- Another order-related restriction of a Production order consists in the desired thickness and Width of the end product to be manufactured, e.g. of desired sheet. Finally, the quantity or Tonnage of the respective production order order-related restriction.
- FIG. 3 shows a method for operating the Thin slab caster 1 shown with which the aforementioned technical and order-related restrictions can be taken into account.
- the method of FIG. 3 links a genetic algorithm and an event-oriented Evaluation represents.
- an initial or Starting solution defined, afterwards an iteration process to determine for the operation of the thin slab caster 1. If an abort criterion is met, the process is ended.
- the best determined solution then represents a solution with of the thin slab caster 1 with regard to technical and order-related restrictions optimized can be operated.
- a block 22 is shown in FIG Determination and definition of the solution space is provided. There one user will do everything for the implementation the data required in a computing device entered. This process is also called coding.
- the characterize order-related restrictions e.g. the steel brands of the respective production order, the Quality of the steel, the desired width and thickness of the End product, and the like.
- the computing device determines from this data in block 22 a first solution with which the existing technical and order-related restrictions at Thin slab caster 1 could be met.
- This first solution is a proposal like the one individual slabs belonging to the production orders the thin slab caster 1 sequentially should be manufactured.
- the first solution which is also called Starting solution is called, it is a solution in which the thin slab caster 1 is rather unsatisfactory would be operated.
- the first solution determined in block 22 evaluated by the computing device. For this, a event oriented assessment based on the existing starting solution. It is with the Values of the starting solution the operation of the Thin slab caster 1 simulated by the computing device.
- the technical restrictions of the Thin slab caster 1 considered. This is what it is about among other things, the operating parameters of the Thin slab caster 1, e.g. the number of Casting strands 2, 3, 4, the number and type of casting plants 9, 13, the number of strands passed in the tunnel furnace 5 of slabs, the number and type of rolls of the Hot rolling mill 6, and the like. It is also in doing so, those data that meet the technical restrictions characterize, for example the possible widths and thicknesses of the slabs or the jump distances or the like.
- Simulation results can include, among other things deal with the processing time required to to fulfill a specific production order. It can are the time periods when using the first Solution for the individual sequences 18 result. It can be the utilization of the thin slab caster 1 act arises with this starting solution. Such and others Simulation results can be determined by the computing device and provided as output information of block 23 become.
- a block 24 is based on the computing device of the simulation result provided Choices made.
- the criterion for this selection is the Goodness of the simulation result. That goodness is from that Calculator calculated from the simulation result, namely in With regard to the best possible fulfillment of the technical and order-related restrictions.
- the quality of a simulation result can meet the following criteria.
- the Thin slab caster 1 should be used as well as possible his.
- the individual parts of the Thin slab caster 1 also as good and be evenly utilized.
- the existing ones should Casting strands 2, 3, 4 and casting plants 9, 13 as synchronously as possible operate.
- the longest possible service life of the Parts of the thin slab caster 1 can be reached. It should as little scrap as possible on the whole Manufacturing processes arise.
- the one in the individual Delivery dates provided for production orders should be respected.
- the proposed requirements for the end product to be manufactured, e.g. the breadth, the quality, and the like should be observed.
- Such and other criteria can be used by the computing device the determination of the quality of the from the simulation result made available to block 23 be taken into account.
- a genetic algorithm is applied to the current generation of solutions applied.
- the genetic algorithm After the values of the solution the genetic algorithm have undergone, the resulting new solution fed back to block 23. There, like already an evaluation of the solution was carried out. Then the determined simulation results are sent to the block 24 supplied, which, as was also described, the quality of the simulation results determined and depending on it the process continues or terminates.
- a product-dependent sequence is shown as an example in FIG 26 of the thin slab caster 1 of FIG. 1, which was created according to the method of FIG. 3. How already explained in connection with Figure 2 follow the sequence 26, 27 of armor.
- sequences 26, 27 there are several melts 28 which are used for the production of a plurality of slabs 29 are provided.
- the slabs 29 are different from that Representation of FIG. 2 no longer around "any" slabs, but certain slabs, the certain ones Production orders 30 31 are assigned. This follows from Figure 4 in that the individual slabs 29 with Marks are provided, the second digit of the respective Production order 30, 31 marks, and their first digit the number of the slab 29 within the production order 30, 31 indicates. With the "slab 4.1" is the fourth slab 29 of the first production order 30.
- the slabs 29 of the individual production orders 30, 31 in this way to distribute on the sequences 26, 27 that the Thin slab caster 1 is operated optimally.
- This Distribution is carried out by the computing device according to the method of Figure 3 determined.
- the thin slab caster 1 controlled by the computing device such that the determined Sequence of the individual, for the production orders 30, 31 associated slabs 29 within sequences 26, 27 is actually running.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- General Factory Administration (AREA)
- Control Of Metal Rolling (AREA)
Description
- Figur 1
- zeigt ein schematisches Blockschaltbild eines Ausführungsbeispiels einer erfindungsgemäßen Dünnbrammengießwalzanlage,
- Figur 2
- zeigt eine schematische Darstellung beispielhafter Sequenzen der Dünnbrammengießwalzanlage der Figur 1,
- Figur 3
- zeigt ein schematisches Blockschaltbild eines Ausführungsbeispiels eines erfindungsgemäßen Verfahrens zum Betreiben der Dünnbrammengießwalzanlage der Figur 1, und
- Figur 4
- zeigt eine schematische Darstellung produktabhängiger Sequenzen der Dünnbrammengießwalzanlage der Figur 1, die nach dem Verfahren der Figur 3 erstellt worden sind.
Claims (7)
- Verfahren zum Betreiben einer Gießwalzanlage, insbesondere einer Dünnbrammengießwalzanlage, mit einem Rechengerät, wobei auf der Gießwalzanlge innerhalb von Sequenzen (26, 27) eine Mehrzahl von Brammen (29) hergestellt werden, die unterschiedlichen Produktionsaufträgen (30, 31) zugehören, wobei die Gießwalzanlage entsprechend der ermittelten Abfolge von dem Rechengerät gesteuert wird dadurch gekennzeichnet, daß die Abfolge der den Produktionsaufträgen (30, 31) zugehörigen Brammen (29) innerhalb der Sequenzen (26, 27) mit dem Rechengerät durch einen genetischen Algorithmus ermittelt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß von dem genetischen Algorithmus eine Auswahl und/oder eine Rekombination und/oder eine Mutation durchgeführt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Abfolge der den Produktionsaufträgen (30, 31) zugehörigen Brammen (29) innerhalb der Sequenzen (26, 27) mit dem Rechengerät durch eine ereignisorientierte Bewertung ermittelt wird.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß von der ereignisorientierten Bewertung eine Bewertung von Lösungen nach deren Güte durchgeführt wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß von dem Rechengerät als Ausgangspunkt eine Startlösung ermittelt wird.
- Gießwalzanlage, insbesondere Dünnbrammengießwalzanlage, mit einem Rechengerät und Mitteln zur Durchführung des Verfahrens gemäß Anspruch 1 oder einem der Ansprüche 2 bis 5, wobei auf der Gießwalzanlage innerhalb von Sequenzen (26, 27) eine Mehrzahl von Brammen (29) herstellbar sind, die unterschiedlichen Produktionsaufträgen (30, 31) zugehören, dadurch gekennzeichnet, daß das Rechengerät einen genetischen Algorithmus zur Ermittlung der Abfolge der den Produktionsaufträgen (30, 31) zugehörigen Brammen (29) innerhalb der Sequenzen (26, 27) enthält.
- Gießwalzanlage nach Anspruch 6, gekennzeichnet durch die Verwendung einer ereignisorientierten Bewertung zur Ermittlung der Abfolge der den Produktionsaufträgen (30, 31) zugehörigen Brammen (29) innerhalb der Sequenzen (26, 27).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19832762A DE19832762C2 (de) | 1998-07-21 | 1998-07-21 | Gießwalzanlage, insbesondere Dünnbrammengießwalzanlage |
DE19832762 | 1998-07-21 | ||
PCT/DE1999/002107 WO2000005014A1 (de) | 1998-07-21 | 1999-07-08 | Giesswalzanlage, insbesondere dünnbrammengiesswalzanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1107841A1 EP1107841A1 (de) | 2001-06-20 |
EP1107841B1 true EP1107841B1 (de) | 2002-10-09 |
Family
ID=7874804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99963118A Expired - Lifetime EP1107841B1 (de) | 1998-07-21 | 1999-07-08 | Giesswalzanlage, insbesondere dünnbrammengiesswalzanlage |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1107841B1 (de) |
AT (1) | ATE225688T1 (de) |
AU (1) | AU748189B2 (de) |
DE (2) | DE19832762C2 (de) |
WO (1) | WO2000005014A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10112681B4 (de) | 2000-03-31 | 2004-02-12 | International Business Machines Corp. | Computersystem mit Verfahren zum Planen von Vorgängen in einem Stahlwerk und Programmspeichereinrichtung zum Durchführen des Verfahrens |
DE10047381A1 (de) * | 2000-09-25 | 2002-04-18 | Siemens Ag | Verfahren und Vorrichtung zum Betreiben einer Anlage der Grundstoffindustrie |
US6581672B2 (en) | 2000-09-29 | 2003-06-24 | Nucor Corporation | Method for controlling a continuous strip steel casting process based on customer-specified requirements |
KR100868143B1 (ko) * | 2000-09-29 | 2008-11-10 | 누코 코포레이션 | 주문에 의한 강 스트립 공급 방법 |
US7591917B2 (en) | 2000-10-02 | 2009-09-22 | Nucor Corporation | Method of producing steel strip |
DE10310357A1 (de) * | 2003-03-10 | 2004-09-30 | Siemens Ag | Gießwalzanlage zur Erzeugen eines Stahlbandes |
WO2010051981A1 (de) * | 2008-11-04 | 2010-05-14 | Sms Siemag Ag | Verfahren und vorrichtung zur steuerung der erstarrung eines glessstrangs in einer stranggiessanlage beim anfahren des glessprozesses |
CN106611221B (zh) * | 2016-12-21 | 2018-11-30 | 重庆大学 | 一种用于解决连铸机故障的炼钢-连铸重调度方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19508476A1 (de) * | 1995-03-09 | 1996-09-12 | Siemens Ag | Leitsystem für eine Anlage der Grundstoff- oder der verarbeitenden Industrie o. ä. |
DE19508474A1 (de) * | 1995-03-09 | 1996-09-19 | Siemens Ag | Intelligentes Rechner-Leitsystem |
DE19623671C2 (de) * | 1996-02-02 | 2002-10-17 | Siemens Ag | Verfahren und Einrichtung zum Führen eines Prozesses in der Grundstoffindustrie |
-
1998
- 1998-07-21 DE DE19832762A patent/DE19832762C2/de not_active Expired - Fee Related
-
1999
- 1999-07-08 AU AU59658/99A patent/AU748189B2/en not_active Ceased
- 1999-07-08 DE DE59903053T patent/DE59903053D1/de not_active Expired - Fee Related
- 1999-07-08 WO PCT/DE1999/002107 patent/WO2000005014A1/de active IP Right Grant
- 1999-07-08 AT AT99963118T patent/ATE225688T1/de not_active IP Right Cessation
- 1999-07-08 EP EP99963118A patent/EP1107841B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU5965899A (en) | 2000-02-14 |
EP1107841A1 (de) | 2001-06-20 |
AU748189B2 (en) | 2002-05-30 |
ATE225688T1 (de) | 2002-10-15 |
DE19832762A1 (de) | 2000-01-27 |
WO2000005014A1 (de) | 2000-02-03 |
DE19832762C2 (de) | 2003-05-08 |
DE59903053D1 (de) | 2002-11-14 |
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